"This metal lick starts with a basic minor-pentatonic pull-off run on the high E and B strings (tuned down to D and A, respectively, since we're in standard tuning down one whole step).

"When I get to the third beat of bar 1, I begin a cascading chromatic descent, wherein I slide my fret-hand index finger down the B string one fret at a time, with my ring finger simply following along on the G string, two or three frets up.

"For maximum metal effect, I like to play the last note of the lick as a pinch harmonic, to which I apply a wide finger vibrato."